/*显示隐藏浮层*/
function showDiv(id,s_top,html){
	//var t_top = 50;
	var objTop = 200;
	/*if(s_top != undefined){
		t_top = s_top;
	}*/
	var o_width = parseInt($("#"+id).css('width'));
	$("#"+id).css({
		left:$(document).width()>o_width?($(document).width()-o_width)/2:0,
		top:objTop
	}).show();
	
	$('.overlay').height($(document).height());
	$('.overlay').show();

}
function closeDiv(id){
	$("#"+id).hide();
	$('.overlay').hide();
}

